Posted on February 20, 2018 at 10:30Hi,
I have configure the TIM16_CH1N and TIM17_CH1N timers as input capture to PB6 and PB7 pin respectively:
uint8_t Tim16_17_Init ( void )
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
/* TIM clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM16 | RCC_APB2Periph_TIM17, ENABLE);
/* GPIOB clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
/* pin configuration */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Connect TIMx pins to AFx */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_2);
/* Enable the TIM16 and TIM17 global Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = TIM16_IRQn | TIM17_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// Initialize channel 1
TIM_ICInitStructure.TIM_Channel = TIM_Channel_1;
TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
TIM_ICInitStructure.TIM_ICFilter = 0x0F;
TIM_ICInit(TIM16, &TIM_ICInitStructure);
TIM_ICInit(TIM17, &TIM_ICInitStructure);
/* Enable the CC1 Interrupt Request */
TIM_ITConfig(TIM16, TIM_IT_CC1, ENABLE);
TIM_ITConfig(TIM17, TIM_IT_CC1, ENABLE);
return 0;
}
but not work!!!
Thanks
